The Home Machinist!

I am thinking you are talking elliptical
Turning.
That is completely different from oval shaped.
Cnc mill is the way to go.
All you need is a cnc mill (or tracer with templates) endmills slitting saw and radius cutter.
Kap

Tracer lathe with a rotating eccentric template geared 2:1 or 1:2 to the spindle. Who has one of those. Cnc mill Program two lobe arcs and play with radius corner blend To connect lobes. Some software required. Who has that? I can do that on my fadal TRM. They used to turn throttle valve plates That...

I really don't know the exact scale or size of this engine. It could be a Terning quarter size the Anders engine. It does have a Bell commercial boiler probably never steamed. The water pump I'd not plummed and water gage and dome plumbing need replacement. Needs cleanup and painting and bunkers bui...

I get mechanic's glasses with the center for distance an magnifying area top and bottom on the lens.
It sure helps looking up at a boring head with those tiny lines.
K

Nylatron has a large coefficient of expansion from heat. I used it for the slide block on a half size Case traction engine.. Under load the engine would tend to bind up. The nylatron block was expanding in the slot. Replacing that with brass eliminated the problem. Nylatron may be ok for light loads...

I would just use 1045 and finish to size in one setup.
Why make it hard on yourself.
Use a new gun tap for the threads and drill thru.
Kap

I believe the half scale Terning casting kits went to Florida, and the quarter scale went to his son Aaron Terning.
He may still be in Kansas.
I met Tom at Rough and Tumble in Lancaster.
He was teaching some course.
Don't remember the particulars. That's been 30 years ago.
Kap

Does anyone know of a set of drawings For a 3" per foot Case 45HP engine for sale? This may have been a reduction engineering engine by Ralph Anders. I have a chance to purchase a "barn find" Engine for completion. I have already built a 1/2 and 1/4 scale Tom Terning Cases, now sold. ...

Looks like no back clearance on the cutting edge.

Make two pieces like this and slot to fit tube. Curve to fit inside smokebox. Insert one from each side. Drill smoke box for screw or rivet holes. Transfer punch thru smokebox to shims. And Drill fixing holes in the shims. Deburr slots so the shims don't cut the tubes. McMaster link to show approxim...

Just buy braille rail and the blind wheels will work fine.
K

I purchased a Kozo 3/4" Heisler in January. It has no lubricator and I couldn't find details in the book on how to hook it up. It was reportably built by a Dentist years ago and has never been run. I did the clubs boiler calculations preparing for inspection. Operating pressure is supposed to b...